[todyko]

岩岩睇完DCFever介紹...

EOS 5DS and 5DS R 預計要於 2015 年中的 6 月才正式賣街，前者定價 3699 美元（約 HK$23,676），後者定價為 3899 美元（約 HK$30,227），以 5D Mark III 現在亦要賣 HK$23,180 的定價來看，對用家應有一定的吸引力

我睇來睇去,佢個規格都係一樣,有冇ching知道除左定價之外,佢地仲有咩分別呀???

[ChiuChiu1970]

5Ds R無低通濾鏡

[todyko]

低通濾鏡有咩用??

[h0001244]

話時話，無低通是否應該平d呢？話晒無左塊part屎，定還是無一樣要番加十樣所以賣貴d呢？

[Ryeung02]

我都唔明。N記D800e仲貴過D800.
By common sense, 少D野應該平D啩?

[Ref54]

http://cweb.canon.jp/eos/lineup/5dsr/index.html

Chuck Westfall (Canon USA) explains the difference: "The EOS 5DS uses a conventional low pass filter design in which a single point of image data entering the filter is first separated into two points and ultimately into four points by the time the data reaches the image sensor. By comparison, the EOS 5DS R uses a different low pass filter design in which the single point entering the filter is first separated into two points and then the two points are merged back into a single point by the time the data reaches the image sensor."

Using the optical cancellation technique (vs. complete filter removal) greatly reduces development and implementation costs. The "R" will deliver sharper images, but moiré and aliasing are potential side effects, notably in scenes that include patterns repeating at a specific frequency. Fortunately, Chuck expects this phenomenon to rarely occur and indicated that "If it does, it can usually be mitigated during post processing."

[3769]

期待

[Ryeung02]

多謝師兄解釋，我完全明白取消低通濾鏡的優點。事實上我另一部副機Fujifilm XE02正是不設低通，畫質直迫FF。
只係唔明點解賣貴D。

[k.driver]

特登整衰部機， 再拎走舊衰野 ＝所以冇衰野貴D

[ChiuChiu1970]

低通濾鏡自有數碼單反就存在，這關係到鏡頭的解像力與感光片的解像力出現差異，而產生一種叫摩爾紋的現像，有關摩爾紋是什麼，請google一下。

大多數的數碼相機的感光器是使用Bayer pattern採樣方式，這種方式容易導致畫面出現彩色人工假像和摩爾紋。爲解決這個問題，多數數碼相機在感光器前方安放了低通濾鏡(Lower Pass Filter)來"輕微模糊"光線、濾掉高頻率信號。

"輕微模糊"意味着要減低銳度或者清晰度，這是一物換一物的無奈方法。隨着感光片的像素增多，與鏡頭的解像力差異減少，就開始有條件除掉這塊濾鏡，可以留意到，取消這塊濾鏡的機種都是超高解像度的。

[k.driver]

咁到底可唔可以自己拆走佢架呢？ 拆完之後又會點


都問過， 冇人答到

[Ref54]

Quoted from a topic long long ago:

A: "唔使喇，你係工程佬，你部畸伍弍自己拆左塊低通濾鏡咪得囉"

B: "唔 Work！ 拆左低通, 就連 IR Cut 都冇埋, 會變左 IR 相機!"　

C: 有朋友特別叫人拆走低通做 IR 機

[onjo3]

呢啲係市場心理學

有時一件貨值咩價， 未必因成本而定

而家冇低通=高質

佢自然會定高啲價

做生意永遠都係消息散播，商品定位

之後賣一個價錢

賺幾多 蝕幾多

佢條數 得佢哋先知

[jazyee]

特登整衰部機， 再拎走舊衰野 ＝所以冇衰野貴D

==============

直得懷2

話5定D sensor 其實可以去到無限

只係D相機厰整色整水

[kingkonghk]

我都唔明。N記D800e仲貴過D800.
By common sense, 少D野應該平D啩?
============================

d800e係加多1塊低通, 唔係拆走, 多左野先o岩, 總共2塊

d810先係真正冇低通